Routine Operations Checklist for Centrifugal Pumps
Open the valve in the cooling liquid supply to the bearing, if
Open the valve in the flushing water supply to the stuffing
boxes, if so equipped.
Open the valve in the sealing liquid supply to the stuffing
boxes or mechanical seals, if so equipped.
Open or close the discharge valves according to the
Check the rotor to see that it is free. You should be able to
turn the rotor shaft by hand. Do not start the pump until any
difficulty is corrected.
Prime centrifugal pumps before startup. The equipment will
not pump water unless air in the pump and suction piping is
replaced with water. In addition, the rotating element may
seize from a lack of lubrication.
Use one of the following methods to prime the pump,
depending on operating conditions: positive suction head
(1) or negative suction head (2).
Starting the Pump
Always start the pump according to the manufacturer's
Ensure that all personnel are clear of dangerous areas.
For pumps started with discharge valves closed, open
valves slowly after pump approaches operating speed. Do
not operate the pump with a closed discharge valve.